Condenser for pyroligneous acid



(No Model.)

J. A. MATHIEU. CONDENSER FOR PYROLIGNEOUS AGID.

Patented Dec. 14, 1886.

N. PETERS, mnwumo hun wmm mn. nvc

UNITED STATES JEAN ANTOINE MATHIEU,

' PATENT OFFICE.

OF DETROIT, MICHIGAN.

CONDENSER FOR PYROLIGuNEOUS ACID.

QPECIPICA'IION farming part of Letters Patent No. 354,330, dated December 14, 1886.

.Applicatio-n filed Marrhflfi, 1884.

T0 aZZ whom it may concern:

Be it known that I, JEAN ANTOINE llIA- THIEU, of Detroit, in the county of \Vayne and State of Michigan, have invented a new and useful Im )rovement in Condensers for Pu rifying Pyro igneous Acid, of which the follow. ing is a specification.

Figure 1 is a plan view with the top plate partly broken away, and Fig. 2 is a vertical section.

My invention consists in certain improvements in the construction of condensers for purifying pyroligneous' acid, hereinafter pointed out in the claims.

A consists of a copper vessel, which is connected bya copper pipe, I, with a boilingkettle, or with another condenser which is connectedwithaboilingkettle. IVhereverajoint is made between two plates forming the sides of the condenser, as a I), it is done by overlapping the plates and securing them by rivets B.

The top plate, 0, of the condenser is made somewhat heavier than the sides, and in it is fastened a number of U-shaped seamless cop per pipes, N N, the ends thereof being expanded in plate 0. On the top of plate 0 is fastened a rim, D, making a. basin, which is divided by the center partition, E. An open trough, G, supplied with water by a pipe, H, furnishes water to one side of thisbasin, which descends through pipes N, rises through the bends thereof N, and is discharged through pipe it.

0 represents a pipe connected with con denser A at the bottom and one side, as shown in Fig. 1, to lead off the condensed products therefrom. l

M represents a partition or diaphragm running the whole height of the condenser, but not extending clear across the condenser, as shown in Fig. 2, being in contact with the wallat the side from which outlet-pipe 0 leads, but not reaching the opposite wall. It is pierced with holes to receive the bentpipes N, and need not be closely fitted to the walls of the condenser, its object being to prevent thepassage of vapor in a direct line from pipe K to pipe 0.

The whole condenser A is set in a wooden tub, L, the pipes K 0 making tight joints with said tub where they pass through it, and the tub is kept full of pyroligneous acid L, which Serial No. 125,407. (No model.)

is forced in a cold state through thepipe c, and is drawn off through the pipe 0 into the boiling-kettle. By this means the acid to be distilled is used as a cooling and condensing agent, and thereby partially heated before being distilled, thus saving an amount of heat which is usually wasted.

It will be observed that the U-shaped copper tubes are of uniform length, and are located side by side across the condenser, and, further, that the inner limbs of the pipes are alternately opposite the spaces between the two limbs of the series, whereby the efficiency of the circulation and the condensing-surface are largely increased and the condensing of the vapors rapidly effected.

By my improvements in construction Iavoid soldered joints entirely, and am enabled to use seamless copper pipe of small size, thus effecting a large reduction in first cost, a great increase in durability, and, I believe, increased efficiency.

F represents a close cover for the basin atthe top of the condenser, and consists of a copper plate held down by an iron flange, which is bolted to rim D. By thus making this basin tight I am enabled to circulate cold pyroligneous acid through pipes N, instead of water, without danger of losing any wood-alcohol by evaporation.

Tub L is covered by a copper plate, P, sccured in the same manner as'cover F.

WVhen tub L is made of copper instead of wood, I prefer to make it in two parts, separated on the dotted line in Fig. l, which runs from the center of pipe K to the center of pipe 0.

What I claim as my invention, and desire to secure by Letters Patent, is

l. The combination of the condenser A, having the inlet and outlet pipes K and O, with the cap'plate C, a series of U-shaped pipes, N N, secured at their ends in the cap-plate, the vertical diaphragm M, extending acrossthe condenser and terminating at a short distance from one wall thereof, and pierced at itslower ends with holes, through which the bends of the pipes pass, the rim D, watersupply pipe H, and discharge-pipe a, substantially as and for the purpose described.

2. The combination of the condenser A, having the inlet and outlet pipes K and O, with the cap-plate O, a series of U-shaped pipes, N N, of uniform length,located side by side across the conden'ser,with theinner limbs of the pipes alternately opposite the spaces between the two limbs of the series, the vertical diaphragm M, extending across the condenser and terminating a short distance from one wall thereof, and pierced with holes at its lower end, through which the limbs of the pipes pass, the rim D,

the water-supply H, and the discharge-pipe n, I

substantially as and for the purpose described. 3. The combination, with the condenser A,

having the inlet and outlet pipes K and O, and

the series of pipes N N, of the tub L, surrounding the condenser, and having the pipes e e for the circulation of cold pyroligneous acid JEAN ANTOINE HATHIEU.

\Vitnesses: V

M. W. EDGAR, SUMNER COLLINS. 

